Film-branding machine



Jan. 3, 1928. 1,654,801

- v F. E. GARBUTT ET AL FILM BRANDING MACHINE Filed April 2e. 192s s snee z 1 Jans 3, F. E. GARBUTT ET AL.

FILM BRANDING MACHINE Filed April 26. 192e s sheets-sheet 2 Jan. 3, 1928. 1,654,801

F. E. GARBUTT ET AL y FILM BRANDING MACHINE Filed Avril 26. 1926 5 Sheets-Sheet 3 Patented 3, 1928.

UNITED `sT/frss PATENT oFFlc'E.

FRANK E. G ARB'UTT .AND LEIGH M. GRIFFITH, 0F LOS ANGELES, CALIFORNIA.

m-nmnme MACHINE.

- application mea April ze, 192s. swarm. 104,610.

This invention relates to motion picture film and the marking up of such film for the purpose of identifying it; and this invention relates particularl to a film branding device for photographically marking a film with identifying symbols.

In the motion picture industry large film companies develop film in large amounts. It ishighly desirable to keep'a close check on the film in regard to the date of developing, [the machine in which the film was developed and possibly the Workmen in charge of the machine at the time. We have found that such records may be conveniently placed 5 on one edge of the film outside-the perforations ,and that such identification may be photographically impressed thereon vpreferably immediately before the film enters the developing tanks.

It is therefore a general object of this invent-ion to provide a device for photographically impressing identifying symbols on the edge of a film.

It is a further'object of our invention to provide a device of this character which is driven entirely by the film being marked.

It is a still further object of our invention to provide a device of this character in which the film is held tightly in engagement with a rotor of the device. 4

- A stillfurther object of this invention is to provide a device of the character mentioned in which an image plate having images fixed thereon, which are to be impressed on the films, may be readily"4 exchanged when desired. l

A further object ofthis invention is to provide a simple means for removably holding the image plate in place. v

It is another object of this invention to provide a device of this character having a light supply means which illuminates the images on the image plate and renders it easy to properly position the images adjacent to an exposure slot of the rotor of the device.

It is a still further object of; this invention to provide a device of this character having of the film to the identifying images.

means for regulating the time of exposure provide a branding device of the character mentioned in which a lamp is surrounded by a lamp housing, and the lamp housing is surrounded by a. rotor which is turned by the film passing therearound.

In an automatic film .developing machine the film passes continuously, through it. When the\end of one reel of film being developed is reached it is necessary to quickly splice it with the end of a film of a full bodied in one structure.

It is another object ofthis invention to provide a film clamp device or brake which resiliently clamps the film and rotor of the device against motion.

While the filmclamp. of our branding machine is positioned to clamp the filmand rotor of the device against motion, it is desirable that the lamp be extinguished, in order that the heat generated by the lamp will vnot injure the portion of film `held in contact with the, rotor while the latter is stopped.

A still further object -of our invention therefore is to provide a film brandin machine embodying a lm clamping evice which will' open the electrical circuit, energizing the lamp of the rmachine when the clamping device is set, and which Will close this circuit when the clamping device is released.'

vOther objects andl important advantages ,of this invention will be evinced hereinafter.

Referring to the drawings which are for illustrative purposes only:

Fig. 1 isa vertical cross section taken througha device embodying the features of our invention. y

Fig. 2 is a section taken on the line 2-2 of Fig. 1. .f

Fig. 3 is a plan view of Figs. 1 and 2, partially broken away to show certain features.

Fig. 4 is a fragmentary view showing a stri of iilm havin identifying symbols mar ed thereon y tde dev ice of our invention.

Fig. 5 is a similar view to Fig. 2 and shows a form of our invention` having means incorporated .therewith for opening the lamp energizing circuit when the clamp is set and closing said circuit when theclamp is released.

Fig. 6 is a diagrammatic plan view of the' clamp lever takenv on the line 6-6 of Fig. `5 and showing the means whereby the lamp circuit is o cned and closed -by the operation of the c amp lever.

The form of our invention shown in the drawings has a stand 11 which consists of av base 12, anarm 13 which extends upwardfrom the base 12; and a hub 14 which is.

fbrmed inv the upper end of the arm 13. The hub 14 'is provided with an opening 15 which is formed on a horizontal axis and into which opening'15 a sleeve 16 of a bracket shaft 17 extends. Extending forwardly from the sleeve 16 is a yoke portion consisting of a pair of arms 19 at the forward end of which is a hollow shaft 20. The

forward end of the sleeve 16 receives a lamp socket 23 by which a lamp 24 is supported.

- This lamp 24, as' shown best 4in Figs. 1 and' 2, is placed between the arms 19. A plug 25 is carried inthe rearward end of the sleeve 16 to which a connector 2 6 is attached and by means of which electriccurrent is supplied `to the lug 25. Extending from the plug 25 to t e socket 23 are wires 27 which serve to convey current to and from the socket 23.

Carried at the forward end of the sleeve 16 is a lamp housing28. The lamp housing` 28 has a cylindrical tube 29 which surrounds the inner end of the sleeve 16. Be-

tween a rearwardly extended end of the tube 29 and a forward end of the hub 14 is an inner race 31 of a bearing 32. The rearward end of the tube 16 is threaded and `a nut 34 is screwed thereupon for the urpose .nf clamping a lip 35 formed at 4the orward wardly from the tube 29 is a radialv wall 37 and formed at the ripheryI of the radial wall 37 is a `cylindrical wall 38 which surrounds the lamp 24. The upper portion of the cylindrical wall 38 of the lamp housing 28 is provided with an opening39 across which a window 40 extends.l This window is preferably a colored Celluloid member lwhlilch transmits only va small amount of In the lower part of the cylindricalwall 38 there is provided an elongated light aperture 41, the eective length of which is regulated by a shutter 42. The shutter 42is guided throughout its various positionsby pins 43 which extend through a slot 43 and may be clamped in a vdesired position by a thumb screw 44 which is screwed onto a threaded pin 45 carried in the cylindrical wall 38. At one end of the shutter 42 there is a projection 47 which may be manually engaged4 in orderA to move the shutter 42 into a desired position.

Surrounding the lamp housing 28 is a rotor 50.` The rotor 50 includes a casing 51 and a cover 52. The casing 51 has walls 49 forming a\ concentric cylindrical cavity 53. rThe narrow, inner portion of the cavity 53 is smaller in diameter than the outer portion and carries a felt ring 54 which contacts an inner annular radial lip 55 which has an opening 56 formed therethrough through which the inner end of the sleeve 16 and the tube 29 extend. The larger portion of the cavity 53 surrounds the ball bearing 32 and. an outer race of the ball bearing engages a cylindrical face 57- of this portion of the cavity 53. Screwed into the rearward end of the wall 49, forming the cavity 53, is a felt ring retainer 59 which provides-an annular cavity 60 in which a felt ring 61 is carried. Extending outward- 63 extends forwardly and around the cylindrical wall 38 of the lamp housing 28.

The cover 52 has a Wall 65 which provides a concentric ,cavity 66 into which the shaft 20 extends. Surrounding the forward end of the shaft 20 is a bearin 67, an inner race 68 of which engages the cy indrical face of the hollow shaft 20. An outer race 69 of the bearing 67 engages a cylindrical face 70 which surrounds the cavity 66. The inner end of the cavity 66 is closed by a cap 72 which carries a felt 73, the cap 72 and the felt 73 having openings provided therein through which the shaft 2() extends.

Extending outwardly from the wall 65 of the cover 52 is apradial wall-74 at the outer end of which a cylindrical lip 75 is formed. The cylindrical lip 75 is adapted to extend inside the cylindrical wall 63 of the casing 51 and to be in engagement with an inner cylindrical face 76 of this cylindrical wall 63. A radial annular face 77 formed at the outer end oi' the radial wall 74 is adapted to be in engagement with a forward radial face of the cylindrical wall 63 of the casing 51.. The cover 52 is removably retained lin place by bayonetfcatches which vconsist of ,race 84 consists of edge faces 85 which are adapted to be contacted by a film 86 which passes around the rotor 50. Radial edge flanges 87 extend outwardly from the extremities of the faces 85.

An elongated exposure slot 90is formed in the cylindrical wall 63 so that it extendsl though the inner film engagement portion 86.

This is clearly shown in Figs. 1 to 4.

Formed in the cylindrical'v wall 63 adjacent to the exposure slot 90 is an image plate receiving recess 91 in whichan image plate 92 is placed. As shown in the drawingathe image plate 92 extends so that it covers the lexposure slot 90. lThe casing 51 is procut away and a gap is provided between end faces 97 of the inner edge flange 87. The exposure slot`91 is formed adjacent to this gap and the image platey 92 rests in the gap and in Vthe recess 91 which Ais formed in this gap. lThe removable section 96 is placed as shown in the drawings and is adapted to be retained in place by engagement of the band 94 in a channel 100 thereof. As shown in Fig. 3, the band 94 may be rotated so that it does not extend over the removable section 96 .and retain it in place, this being provided'so that the removablesection can be removed and the image plate 92 can be replaced. A

The film is held in firm engagement with the race 84 by means of tension rollers 102. These tension rollers 102 are rotatably carried on'shafts 103 which shafts 103 are retained by yoke portions 104 of rockers 105.

Extending fromthe ends of the yokes 104 are pins 106 which retain the film 86 in proper alignment on 'the tension rollers 102 and also serve as a means whereby the rollers may be swung out of the positions shown in the drawings. The rockers 105 are provided with hubs 106 which are pivotally carried on horizontally extending shafts 107. These shafts 107 extend from arms 108 which arms 108 are secured by cap screws 109 to opposite sides of the hub 14 of the stand 11. Extending downwardly froin the hubs 106 are arms 110 to which upper enlarged ends 111 of members 112 are pivotally attached by means of shafts 113. Extending downwardly from the enlarged ends 111v are shafts 113 which are springs 114. The lower ends of the shafts 113 extend through openings 116, provided surrounded by compression in blocksJ 117, 'the blocks 117 having trunnions 118l which extend horizontally and outwardly therefrom 'in opposite directions, these trunnions 118 restin in bearings 119 which consist of semi-cylindrical channels in the upper faces of bearing blocks 120. The compression springs 114 are compressed between the uppe'rfaces of the blocks 117 and the lower faces o'f the enlarged end 111 of the .members 112. Therefore, thc'lower arms 110 of the rockers 105 are forced out-` wardly and the upper yokes 104 thereof are forced inwardly. Thiscauses the friction rollers 102 to firmly hold the film 86 in contact with the film engagement. portions 85 of the race 84 formed on the rotor 50.

The vfilm 86 and the rotor 50 may be constrained from movement-by a brake arrangement of this invention. As shown in Figs.

'1 and`2, the base 12 of the stand 11 isprovided with a vertically extending integral tube 125 which provides a vertical cylindrical opening 126. Extending into this opening 126 isa: tube 127. The upper end of the tube 127 extends into a hole 128 formed through the central part of a brake shoe 129. This brake shoe, as shown in Fig. 2,/is arcuated and conforms to the cylindrical shape of the race 84 of the rotor 50. The shoe 129 is provided with cylindrical edge faces 130 against which leather facings 131 are held. these facings being held in-place by screws 132 which extend through ends 133 of the facings 131 and screw into the opposite ends of the shoe 129. As shown in Fig. 1, the facings 131 are positioned so that they may 87 and will engage the edge or perforated portions'of the film 86 clamping them tightly against the film enga ementportions 85 of the film race 84, thus locking the film 86/ from movement and the rotor 50 from robe moved upwardly between the edge flanges y tation. The brake shoe 129 is resiliently rey thereof which lock their lower ends from upu ward movement.

Placed in the lower end of the tube 1.27 isv a spring engager 139 having a cup 140. The upper end of the tube 127 is closed by a plug 142 and compressed between this plug 142 and the bottom'l of the cup 140 is a compression spring 143. Extending downwardly from the cup 140 is a boss 145 of the spring engager 139. Secured to the base 12 is a clevis 147 which carries a shaft 148. Pivotally carried on the shaft 148 is a brake lever 149. An end 150 of the brake lever 149y extends to a point below the boss 145 and in engagement therewith. The other end of the brake lever 149 extends to the exterior of the base 12 through a slot 152 and is provided with a hand engagement portion 153 by means`of which the brake lever 149 is operated. The brake lever 149 may be moved manually into a position indicated by dotted lines 155 in Fig. 2. This causes the end 150 of the brake lever 149 to move the spring engager 139, the tube127 and the brake shoe 129 upwardly until the brake shoe and facingsfoccupy a position indicated by dotted lines 156 in Fig. 2. By this action the facings 131 are brought into engagement with 'the perforated portions of the film 86 and will clamp the film and rotor against movement. However,.the brake shoe and facings reach the position indicated at 156 before the brake lever 149 reaches the vposition indicated by dotted lines 155; therefore there is a relative movement bet-Ween the spring engager 139 and the brake shoe 129, this relative movement serving to compress the compression spring 143. For this reason there will always be a resilient pressure applied' against the film and rotor bythe facings of the brake shoe. l

Referrin to Fig. 1, the brake lever 149 may be 're easably locked in the position..

shown by dotted lines 155 in Fig. 2 and by dotted llnes 160 in Fig. 1 by means of acatch 162. The catch 162 is pivoted on a pivot 163. A horizontal shoulder 164 is provided by the catch 162 and is adapted to engage an upper face of the brake lever 149 andto retain it in a lower position. The catch 162 is resiliently held in the position shown in Fig. 1 by a coil spring .165 and may be removed from this positionby manual engagementswith an extending lever 166. VAs the brakehlever 149 is moved downwardly it engages an oblique face 167 which swings the catch 162 so that the brake lever 149 may move downwardly past it. The catch 162 is immediately returned to full line position when the bra-ke lever has moved past it and it will engage the lever, thus releasably re taining it in lower position.

In Fig. 4 we show a fragmentary View of i the iilm 86. This ilm 86 is perforated near opposite edges thereof. as'indicated at 170.

ldentifying symbols are impressed on one edge of the film in a space between the perforations and the extreme edge of 'the film, such as indicated at 171 in Fig. 4. 'These identifying symbols may be of any character. y

in Figs. 5 and 6 is shown an added feature of our invention comprising alamp circuit breaking switch 200 which isassoci-i Aated with the brake lever 149. rlhe switch 200 has spring contacts 201 forming thearms of a li shaped switch ter- 'minal member 2021...'1his member 202 is riveted, as shown,:upon the lower portion of a recto-prismoidal shaped column 204 formed of insulating material and secured at its upper end by machine screws 206'to the base 12. l

The other terminal of the switch 200 is in 4 the form of a lug 210formed to extend longitudinally from the inner end of the lever 149. The lug 210 and the contacts 201 are so relatively positioned that when the lever ,149 is in its released position, shown in full 24 the circuit 212 leads through the other wire 27, through the secondary winding of a transformer Y215, which is the source of current in the circuit 212, and thence through a wire 216, which is vsecured at 217 to the frame 12, through the frame 12 to the lever 149 and through the 'lever 149 to the lug 210, whichis in contact with the contacts 201 of the switch terminal member 202 from which member the above tracing of the circuit 212 commenced.

It is thus obvious that when the lever 149 is moved into its film clamping position, shown by dotted lines 155 in Fig. 5, the lug 210 will'be removed from engagement with the contacts 201, thus opening the circuit 212 and/causing the lamp 24 to be extinguished. The lamp 24 will remain out until the lever 149 is returned to film releasing position, in which it is shown in full lines in Fig. 5, whereupon 'the switch 200 will be closed, thus closing the circuit 212 and causing the lamp 24 to be again energized.

Itmight be well to state at this time that this invention is adapted to be used in conjunction with a film developing machine 'such as shown in our application entitled Film developing machine, Serial No. 104,609, iiled April 26, 1926. In the operationof this invention the film 86 is first entended around the rotor 50 in the race 84 thereof. ,The tension rollers l102 may be swung out of engagement to permit a threading of the film around the rotor by engaging the pins 106 and swinging them outwardly from the rotor.- For each diiierent machine, and each division of workmen, or for each separate series of ilm reels, it may be desirable to have a particular iden- *ti-tying symbol. The image plate 92 having the images fined thereon is placed as previously described. rlhe correct positioning of the images over the exposure slot may be easily obtained, since there is a faint light shining through 'the window 40-which light ymovin tv 'e shutter 42.

, asses through the exposure slot 90 and i1- u'fninates the portion'of the image plate directly thereabove. Therefore, the images are plain-l visible and may be properly adjusted. t is the rotor 50 when placing the image plate 92 thereon is in such a position that thel ex osure slot 90 is in substantial alignment with the window 40.

When the desirable preliminary ad'ustments have been made and the film has een extended around the rotor in contact therewith, the film may be moved and at this time the rotor 50 will turn therewith. A light constantly shines through the light aperture 41 when the clamping lever 149 is in releasing position, as shown in Fig. 2. .Asl the rotor 50 revolves, the exposure slot 90 moves into alignment with the exposure slot 41 and light passes therethrough, through the translucent portions of the image plate A91, and photographically impresses the images on one edge of the film in places such'as indicated at'17 l in Fig. 4.v

It is obvious that the exposure slot 90 moves into alignment with the light aperture 41 at every rotation thereof. Therefore the film is photographically impressed with identifying symbols at intervals which may be about every foot. our invention herein described may pass to the developing machine where the film is developed, bringing out theimages on the frames and also bringing out the images of the identifying symbols, and thus the identify'ing symbols are -.permanently fixed thereon.

The effective length of the aperture41, a's previousl described, ma be adjusted by his is desirable so that t ephotographic im ressions of the indicated s mbols will not be over or under exposed. ometimes the apparatus is run faster or slower ,than a normal speed for certain reasons, and it is therefore desirable to either lengthen or shorten the effective length of the light aperture 41. To make this adjustment it is necessary to remove the cover 52, which may be easily done, since it is retained in placeonly by the bayonet' catch arrangement which has been already described.

When the end of the film 86 is r-eached and it is desired to splice another lenfth of film thereinto the brake lever 149 is vderessed into the position shown by dotted ines 55 and 60 of Figs. 1 and 2 respectively, and the brake isk applied as previously explained. This brake engages the lfilm and exerts sufiicient pressure thereon to lock the [rotor 50 and the film against movement.

When the lamp circuit breaking device ilylustrated in Figs. 5 Vand 6 is embodied in our filmpbranding machine, the circuit of the lamp 24 is held open as long as the lever of course, understood thatl The film from- 149 is retained in brakingposition. After the splice has been made, theecatch 162 may bereleased, thus closing the circuit of the,

lamp 24 and allowing the film to again move and pass continuously through the device of our invention, and also through the film developng machine or tothe apparatus in conjunction with which thisinvention is be- The device of our invention has certain very beneficial advantages. In thel first place, the rotor-is driven entirely by the film passing therearound. Therefore, there is no necessity forproviding 'separate driving meansfor the rotor and also there will vbe no slippageof the filmv on the lm race 84. This is very desirable since film developing machines and such apparatus handling film on spools do not operate. at a uniform-rate of speed, but must operate faster or slower to compensate for certain exigencies, such as plate in correct positionl is also' necessary, is advantageous, since the film may pass thereover at various rates of speed. For example, if a certain film has been taken in bright light it may be desirable not to develop 'it to such an extent as'a film which was photogra hed where there was not so much light. n this case the entire developing machine ,would run at a, high rate of speed and also the rotor 50 would rotate at a higher rate of speed. Therefore, the time that'the ex osure slot 90 was in alignment with the li t a erture 411would be less and it would, t ere ore, be desirable to increase the effective length of the light a rture so that a proper exposure ofthe to the identifying symbols could vbe had.. j

The brake feature of your invention is also very important since it ermits the film to be very easily stopped w enit is desired to make a splice. It should be understood, of course, that this invention is particularly adapted for use in conjunction with the film developing machine shown in our `copend ing application which has been referred to hereinbefore, this film develo ing machine providing a. take-up means y means of which film would still be fed to the developing machine even thou lr the extreme forward end thereof was c amped against motion.

As explained in the specification, the brake shoe exerts a resilient pressure' against the' will always-be 'substantially the same and f be en aged by a will be suiiicient to restrict the film and the rotor 50 roma movement. y

It is lquite advantageous to incorporate the brake in the film branding device. Not

-only is thisI conducive to econom but it is desirable to clampv the film at this point.

The lamp circuit switch associated with, the braking lever 149 is a great advantage if not an absolute necessity to the safe operation of our branding machine. When the. film is clamped against movement through our branding machine for but a short length of time, the circuit breaker yvould not'b'e necessary. But it is not possible to anticipate just hoW long each stop 1n the operation of the branding machine is .going to be; therefore, the circuit breaker is essential to removeall danger of damage to the filmby the lamp through the operators forgetting to turn out the lamp when long stops are made.

`We claim as our invention:

l. A device of the class described comprising: a light source; a lamp housing surrounding said light source, said lamp hout ing having a light aperture; a rotorl surrounding said lamp housing and having a film race adapted to be engaged by a film, said rotor being rotated by said film and said rotor having an exposure slot formed therein through which lighti passes when same is in alignment with said light aperture; an image plate covering said exposure slot; and means for removably holding said image plate in place.

2. A device .of the class described comprising: a light source; a lamp housing surrounding;I said light source, said lamp housing having a light aperture; a shutter lor 'regulating the effective length oli said light aperture; a rotor surrounding" said lamp housing and havin a i'ilm race adapted to mtsaid rotor being rotated y said film and said rotor having an xplosure slot `:tbrmed therein through which e 1i t passes When saine is in alignment with said light aperture; an plate covering said exposure slot; and means lor removably holding sa'id image platein'place.

3. A device of 'the cime described comprising: a light source; a lamp housing surrounding said light source, said lamp hausn ing having a light aperture; a rotor surrounding said lamp housing and having` race adapted to be engaged by a nlm, said .rotor being rotalxedbyv said film and said rotor having an exposure slot termed therein through which light passes when same is in alignment with said light aper`1 ture; an image plateccvering said exposure slot; means for removably holding said image plate place; and Window l'ormed in said r`lam housing adapted to furnish sufficient lig t for proper y placing said image plate.

4, A device of the class described comprising: a light source; a lamp housing surrounding said light source, said lamp housing having a light aperture; a rotor surrounding said lamp housing and having a film race adapted to be engaged byra film, said rotor being rotated by said lm and said rotor having an exposure slot formed therein through which light passes When same is in alignment with said light aperture; means fbr holding said lm in contact with said film race; an image plate covering said exposure slot; means for removably holding said image plate in place; and a Window formed in said lamp housing adapted to furnish 'suilicient light for properly placing said image plate.

o. A device of the class described comprising: a light source; a lamp housing surrounding said light source, said lamp housing having a light aperture; a shutter for regulating the effective length of said light aperture; a rotor surrounding said lamp housing and having a film race adapted to be engaged by a film, said rotor being rotated by said film and said rotor havin an exposure slot formed therein through w iich light passes When same is in alignment with said light apertiire; an image plate covering said exposure slot; means for removably holding said image plate in place; and a Window formed in'said lamp housing adapted to furnish sufficient light for properly l placing said image plate. 6. A device of the class described comprising: a light source; a lamp housing surrounding said light source, said 'lamp housing having a light aperture; a shutter for regulating the effective length of said light aperture; a rotor surrounding said lamp housing and havin a lm race adapted to be engaged by a fi In, said rotor being ro.- tated by said film and said rotor` having an exposure slot iormed therein through which light passes When saine is in alignment with Vjeaid light aperture; means for holdingr said lllin in contact with said hlm race; an image plate coverin f said exposure slot; means for removably ho ding said image plate in place; and a Window formed in said lamp housing adapted to furnish sucient light for prop-` erly placinoP said image plate.

l. t. n lieviti, of uw @iassdesmbea comprising: alight source; a lamp housing surrounding said light source, said lamp housing having alight aperture a rotor surrounding said lamp housing fand having a hlm race 'adapted to be engaged by a iilm, said rotor being rotated bysaid film and said rotor having anexposure slot formed therein through which light passes when saine in alignment with said light aper- W engaged by a ture; animage late covering said exposure slot; a removab e Section placed at one side of said film race, ada ted to hold said image plate in place and a and extending'around said rotor for holding said removable section removably in place.\ l

8. 'A device of the class described comprising: a light source; a lamp housing surroundingv said. light source, s aidy lamp housing having a light aperture;fa rotor surrounding saidflamp housing and having a film race adapted to be engaged'by a film, said rotor being rotated by said film and said rotor having an exposure slot formed therein through which light passes when same is in alignment with said light aperture; means for holding said film in contact With said film race; an image plate covering said exposure slot; placed at one 'side of said film race, adapted to hold saidl image plate in place; and a band extending around said rotor for holding saidremovable section removably in place.

419, A device of the class described comprising: a light source; a lamp housing su rrounding said light source, said lamp housing having a li ht aperture; a. shutter for regulating the e ective length of said light aperture; a rotor surrounding said lamp lhousing and .having a film race adapted to be engaged by a fllm, said rotor being rotated by said film and said rotor havin an 'exposure slot formed' therein through W ich light passes when same is in alignment with said light aperture; an image plate covering said exposure slot; a removable section placed at one side of said film race, adapted to hold said image plate in place; and avband extendingaround said rotor for-holding said removable section removably in place.

10. A device of the class' described com prising: a light source; a lamp housing surrounding said light source, said lamp housing having a light aperture; a shutter for regulating the edective length of said light aperture; a rotor surrounding said lamp housing and having a film race adapted to fi m, said rotor being rotated by said film and said rotor having an exposure slot formed therein through' which light passes when same is in alignment with said light aperture; means for holding said film in conta-ct with said film race; an image plate covering said exposure slot; a remov-l able section placed at one side of said film race, adapted to .hold said image plate in place; and a band extending around said rotor for holding saidremovable section removably in place. i l

l11. A. device 'of the class described comprising: a light source;-'a lamp housing surrounding said light source, said lamp housing havinga light aperture; a rotor sur-l roundingsaid lamp housing and having a a removable sectionl film raceadapted to( be engaged by a film, said rotor being rotated by said film and said rotor having an exposure slot formedY therein through which light passes when saine is in alignment with said light aperture; an image plate covering said exposure slot; a removable section placed at one side of said film race, adaptdd to hold said image plate in place; a bandfextending around said rotor for holdingy said removable section removably in place; and a Window formed in said lamp housing adapted to furnish sufficilent light for properly' placing said image ate. p 12. A device of the class describedI comprising: a light source; a lam housing surrounding said light source, said lamp housing having a light aperture; `a rotor surrounding said lamp housing and having a film race adaptedto be engaged by a film, said rotor being rotated by said film and said rotor having an exposure slot formed therein through which light passes when section'placed atone side of said film race,

'adapted'to hold said image plate in place;

a band extending around said rotor for -lrolding said removable section removably in. place; and a window formed in said lamp housing adapted to furnish sufficient light for properly placing said image plate.

13. A device of the class described comprising: a light source; a lamp housing sur-` rounding said light source, said lamp i ousing having a light aperture; a shutter' for regulating the effectivev length of said light aperture; a rotor surrounding said lamp housing and having a film race adapted to be engaged by a` film, said `rotor being rotated-by said film and saidrotor having an exposure slot formed therein through which light passes When same is in alignment With saidliglitaperture; anl image `plate covering said exposure slot; a'removable section placed at one side of said film race, adapted to hold said image plate in place; a band extending around said rotor for holding said removable section vremovably inplace; and

' a Window formed in said lamp housing adapted to furnish lsufficient light for properly placing said image plate. 14. A device of the class described comprising: a lightsource; a lamp housing sur,- roundin said light source, said lamp housing having a light aperture; a shutter for regulating the effective length of said light aperture; a rotor surrounding said lamp. housing and having'a film race adapted to be engaged by a film, said rotor being rotated by said film and said rotor having an exposure slot formed therein vthrough Whichlight passes when same is in alignment with said light aperture; means for holding said by saidafilm and said Irotor havi an ex# film in contact with said film race; an image posure slot formed therein through which plate covering said yexposure slot a removable section placed at one side of said film race, ada tedl to hold said image 'platein place; a jand extending around said rotor for holding saidreinovable section removably in place; and a Window formed in said lamp housing adapted to furnish sufficient light for. properly placing said image plate.

`15. A device of the class described comprising: a light source; a lamp housing surlsie rounding said light source, said lamp hous-i ing having a light aperture; a rotor surrounding said lamp housing yand having a film race adapted to be engaged by a film, said` rotor being rotated by said film and saidA rotor having an exposure slot formed therein through which light passes when same is in alignment With said light aperture; an

image plate covering said exposure slot;

means for removably holding said .image plate in place; and a brake adapted to engage and clamp said filmand said rotor from movement. i

16. A device of the class described comprising: a light source; a lamp housing surrounding said light source, said lamp housing having a light aperture; a rotor surrounding said lamp housing and having a light passes when same is in valignment with said light aperture; means for holding said film in contact with said film race; an image plate covering said exposure slot; means for removably holding said image plate in place; and a brake adapted to engage and clamp said film and said rotor from movement.

19. A device of the class described comprising: a light source; a lamp housing surrounding said light source, said lamp housing having a light aperture; a rotor surrounding said lamp housing and havin a film race adapted to be engaged by a said rotor being rotated by said film and said rotor having an exposure slot formed therein 'through which light asses when same is in alignment with sai light aperture; an ima e plate covering said exposure slot; means For removably holding sind image plate in place; a brake adapted to engage and clamp said film and said rotor from movement; and a window formed in said lamp housing adaptedto furnish sufi'icient light for properly placing said image plate.

20. A device of the class described com- Y i prising: a light source; a lamp housin surrounding said light source, said lamp. ousing having a light aperture; a rotor sur- 4film race adapted to be engaged by a film, said rounding said lamp housing and havinv a rotor being rotated by said. film and said film race adapted to be engaged by a rotor having an exposure slot formed there- Said rotor'being rotated by said film and said in through which light passes when 'Same 101201 havlllg' 8,11 exposure SlOt, formed thereis in alignment ivith said light aperture; means for holding said film in contact with said film race; animage plate covering said exposure slot; means for removably holding said image plate in place; and a brake adapted to engage and clamp said film and said rotor from movement. I K

17. A device of the class described comprising: a light source; a lamp housing sur- 0 rounding said light source, said lamp housing having a light aperture; a shutter for regulating the effective length of said light aperture; a rotor surrounding said lamp housing and having a film race adapted tol be engaged by a film, said rotor being rotated by said film and said rotorfhavin an exposure slot formed therein through W ich light passes when same is in alignment with said light aperture; an image plate covering said exposure slot; means for removably holding said image plate in place; and a brake adapted to engage and clamp said film and said rotor from movement.

'18. A device of the class described comprising: a light source; a lamp housin surrounding said light sourcc, said lamp ousing having a light aperture; a rshutter-iterv regulating the .effective length of said light aperture; a rotor surrounding said lampf housing and having a film race adapted to be engaged by a film, saidrotor belng rotated posure slot;`means for removably holding I l said image plate in place; a brake ada te to engage and clamp said film and sai rotor from movement; and a window formed in said lamp housing adapted to furnish suflicient light for properly placing said iinage plate. 5

21. A device of the class described comprising: a lightsource; a lamp housin surrounding said light source, said lamp ousing having a light aperture; a shutter for regulating the effective length of said light aperture; a rotor .surrounding said lamp housing and having a film'race adapted to be 'engaged by a film,` said rotor being rotated by said film and said rotor havin an exposure slot formed therein through w ich light passes when same is'in' ali nment with said light aperture; an image pate covering said exposure slot; means for removably holding said image/ plate inplace; a brakek iol ila

prising: a light source; a` lamp housing surrounding said light source, said lamp hous- 4 ing having a light aperture; a shutter for regulating the effective length of said light aperture; a rotor surrounding said lamp housing and having a iilm race adapted to be engaged by a film, said rotor being rotated by said film and said rotor having an exposure slot formed therein through which ight passes when same is in alignment with said light aperture; means. for holding said film in contact with said film race; an image plate covering said exposure slot; meansy for removably holding said image plate in place;

a brake adapted to engage and clamp said ilm and said rotor from movement; and a window formed in said lamp housing adapted to furnish suiicient light for properly placin said image plate.

l23. device of the class described comprising: a light source; a lamp housing surrounding said light source, said lamp housing having a light aperture; aA rotor surrounding said lamp housing and havin a ilm race adapted to be engaged by a fi m, said rotor belng rotated by said film and said rotor having an exposure slot formed therein through which light passes when same is in alignment vvith said light aperture; an image plate covering said exposure slot; and means for co-ordinately clamping said film against movement and de-energizing said light source.

24. A device of the class described comprising: a light source; a lamp housin surrounding said lightv source, said lamp ous-I ing having a light aperture; a rotor surrounding said lamp housing and havin a film race adapted to be engaged byV a 1n, said rotor being rotated by said ilm and said rotor having an exposure slot formed there-- in through which light passes when same isV in valignment with said light aperture; an

image plate covering said exposure slot; and means for co-ordinately clamping said film FRANK E. GARBUTT. LEIGH M. GRIFFITH. 

